The Weekly Epidemiological Record (WER) for 9 March 2012, vol. 87, 10 (pp 81–96) includes: Global Polio Eradication Initiative: fifth meeting of the Independent Monitoring Board; Recommended composition of influenza virus vaccines for use in the 2012–2013 northern hemisphere influenza season.

http://www.who.int/entity/wer/2012/wer8710.pdf